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Finding the Fourth Proportional to 304,020.40, 454,718.40 and 256,781.20

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Solution

The fourth proportional to 304,020.40, 454,718.40 and 256,781.20 is: 384,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,020.40 : 454,718.40 = 256,781.20 : x
  2. Step 2: Convert to fraction form
    304,020.40/454,718.40 = 256,781.20/x
  3. Step 3: Cross multiply
    304,020.40x = 454,718.40 × 256,781.20
  4. Step 4: Simplify right side
    304,020.40x = 116,763,136,414.08
  5. Step 5: Solve for x
    x = 116,763,136,414.08/304,020.40
  6. Step 6: Final answer
    x = 384,063.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.